[OpenSIPS-Users] TCP connection relay issue

Devang Dhandhalya devang.dhandhalya at ecosmob.com
Wed May 4 08:58:27 UTC 2022

Hi All

Issue is whenever i am sending Register or INVITE request with TCP in
opensips using tcp connection to relay request to Freeswitch server while i
want to use UDP socket to send Request from OpenSIPs to Freeswitch , using
mid registrar for registering users.
OpenSIPS version : 3.2.2

flow :end user -> OpenSIPS -> Freeswitch -> OpenSIPS -> enduser
OpenSIPS configuration  :
tcp_connection_lifetime = 3615

socket=udp: as
socket=tcp: as

loadmodule "proto_tcp.so"
modparam("proto_tcp", "tcp_async", 1)
modparam("proto_tcp", "tcp_send_timeout", 3000)
modparam("proto_tcp", "tcp_async_local_connect_timeout", 3000)
modparam("proto_tcp", "tcp_async_local_write_timeout", 3000)
modparam("proto_tcp", "tcp_max_msg_chunks", 8)

I used force_send_socket , $fs function to use UDP socket but still
OpenSIPS using tcp connection for relay packet to Freeswitch any other
functionality which overwrites this core function .
In another setup the same configuration but opensips sends requests using a
UDP socket. That's strange for me because of the same setup  .
There is a particular configuration that we use tcp connection / UDP socket
to relay packets.

Kindly inform me how we send requests using UDP socket instead of tcp

Devang Dhandhalya

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